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EP0942181A3 - Anti-cross threading fastener - Google Patents

Anti-cross threading fastener Download PDF

Info

Publication number
EP0942181A3
EP0942181A3 EP99301657A EP99301657A EP0942181A3 EP 0942181 A3 EP0942181 A3 EP 0942181A3 EP 99301657 A EP99301657 A EP 99301657A EP 99301657 A EP99301657 A EP 99301657A EP 0942181 A3 EP0942181 A3 EP 0942181A3
Authority
EP
European Patent Office
Prior art keywords
shaft portion
threaded shaft
screw threads
tapered
tip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99301657A
Other languages
German (de)
French (fr)
Other versions
EP0942181A2 (en
EP0942181B1 (en
Inventor
Seina Savoji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/038,462 external-priority patent/US6158938A/en
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of EP0942181A2 publication Critical patent/EP0942181A2/en
Publication of EP0942181A3 publication Critical patent/EP0942181A3/en
Application granted granted Critical
Publication of EP0942181B1 publication Critical patent/EP0942181B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends
    • F16B35/047—Specially-shaped ends for preventing cross-threading, i.e. preventing skewing of bolt and nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/025—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread specially designed to compensate for misalignement or to eliminate unwanted play

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Dowels (AREA)
  • Surgical Instruments (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Discharge Heating (AREA)

Abstract

An anti-cross threading fastener (10) having a threaded shaft portion with a major diameter and a minor diameter, may have a leading end shaft portion (26) devoid of screw threads and having a diameter less than the major diameter of the threaded shaft portion. The leading end shaft portion may also include a tip (27) having an at least partially substantially curved surface (28), and a groove (40) disposed about the shaft portion between the tip portion and the threaded shaft portion. A cylindrical shaft portion (70) may be disposed between the tip portion (27) and the groove (40). A portion (32) of the threaded shaft portion tapers narrowingly toward the tip portion, and the screw threads of the tapered threaded shaft portion have a flank angle greater than a flank angle of the screw threads of a non-tapered threaded shaft portion. The tapered screw threads may be formed of spaced apart lobes (37). Alternatively the fastener (110) includes a shaft portion having a first leading end portion (140) with a first end (132), a first threaded shaft portion having a first tapered threaded shaft portion (142) narrowing toward the first end, and screw threads of the first tapered threaded shaft portion have a flank angle greater than a flank angle of the screw threads of a first non-tapered threaded shaft portion (144). A cylindrical shaft portion (150) having a diameter less than a major diameter of the first threaded shaft portion may be disposed between the first end of the shaft portion (160) and the first threaded shaft portion (142). The first leading end portion may have a first tip portion with a partially substantially curved surface (180), or a driving tool engagement surface (162).
EP99301657A 1998-03-11 1999-03-05 Anti-cross threading fastener Expired - Lifetime EP0942181B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/038,462 US6158938A (en) 1998-03-11 1998-03-11 Anti-cross threading fastener
US38462 1998-03-11
US12416998A 1998-07-28 1998-07-28
US124169 1998-07-28

Publications (3)

Publication Number Publication Date
EP0942181A2 EP0942181A2 (en) 1999-09-15
EP0942181A3 true EP0942181A3 (en) 1999-12-08
EP0942181B1 EP0942181B1 (en) 2003-11-05

Family

ID=26715231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99301657A Expired - Lifetime EP0942181B1 (en) 1998-03-11 1999-03-05 Anti-cross threading fastener

Country Status (8)

Country Link
EP (1) EP0942181B1 (en)
JP (1) JPH11351222A (en)
AT (1) ATE253693T1 (en)
CA (1) CA2265140A1 (en)
DE (1) DE69912498T2 (en)
DK (1) DK0942181T3 (en)
ES (1) ES2210975T3 (en)
PT (1) PT942181E (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008042141A1 (en) 2008-09-16 2010-03-25 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg Self-centering screw
US9644663B2 (en) 2015-03-27 2017-05-09 Mathread Inc. Anti-false threading fastener system
US9644665B2 (en) 2015-03-27 2017-05-09 Mathread Inc. Method for correcting translational misalignment between male and female fastener members
US9644664B2 (en) 2015-03-27 2017-05-09 Mathread Inc. Male anti-false thread fastener member
DE102019001871A1 (en) * 2019-03-16 2020-09-17 Hydac Fluidtechnik Gmbh Connecting device
TR2022003067A2 (en) 2022-03-02 2022-03-21 Norm Civata San Ve Tic A S FITTING TO PREVENT ASSEMBLY PROBLEMS CAUSED BY AXIS

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643543A (en) * 1970-09-04 1972-02-22 Textron Inc Machine screw
US3643722A (en) * 1969-05-16 1972-02-22 Parker Kalon Corp Self-locking threaded fasteners
US4261402A (en) * 1978-11-06 1981-04-14 Textron, Inc. Captive thread forming terminal screw
US5209622A (en) * 1991-11-29 1993-05-11 K.K. Aoyama Seisakusho Bolt having spherically tipped thread free cylindrical column
US5609455A (en) * 1995-03-24 1997-03-11 Mckewan; Arthur J. Anticross-threading male fastener
WO1998013606A1 (en) * 1996-09-24 1998-04-02 Textron Inc. Fastener member with anti-cross-threading point and method of assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828604A (en) 1973-06-08 1974-08-13 Illinois Tool Works Method and apparatus for forming tips of screws
ES2154412T3 (en) 1995-07-21 2001-04-01 Michael A Garver ANTI-CROSSING THREADED FIXING ELEMENT.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643722A (en) * 1969-05-16 1972-02-22 Parker Kalon Corp Self-locking threaded fasteners
US3643543A (en) * 1970-09-04 1972-02-22 Textron Inc Machine screw
US4261402A (en) * 1978-11-06 1981-04-14 Textron, Inc. Captive thread forming terminal screw
US5209622A (en) * 1991-11-29 1993-05-11 K.K. Aoyama Seisakusho Bolt having spherically tipped thread free cylindrical column
US5609455A (en) * 1995-03-24 1997-03-11 Mckewan; Arthur J. Anticross-threading male fastener
WO1998013606A1 (en) * 1996-09-24 1998-04-02 Textron Inc. Fastener member with anti-cross-threading point and method of assembly

Also Published As

Publication number Publication date
CA2265140A1 (en) 1999-09-11
PT942181E (en) 2004-03-31
DK0942181T3 (en) 2004-03-22
EP0942181A2 (en) 1999-09-15
DE69912498T2 (en) 2004-05-13
EP0942181B1 (en) 2003-11-05
JPH11351222A (en) 1999-12-24
DE69912498D1 (en) 2003-12-11
ES2210975T3 (en) 2004-07-01
ATE253693T1 (en) 2003-11-15

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